A frequency-lock, or frequency-locked loop (FLL), is an electronic control system that generates a signal that is locked to the frequency of an input or "reference" signal.[1] This circuit compares the frequency of a controlled oscillator to the reference, automatically raising or lowering the frequency of the oscillator until its frequency (but not necessarily its phase) is matched to that of the reference.
A frequency-locked loop is an example of a control system using negative feedback. Frequency-lock loops are used in radio, telecommunications, computers and other electronic applications to generate stable frequencies, or to recover a signal from a noisy communication channel.
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Mod-08 Lec-38 Design of PLL and FLL
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References
- ^ Chaudhari, Qasim. "How a Frequency Locked Loop (FLL) Works". Wireless Pi. Wireless Pi. Retrieved 5 January 2024.
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This page was last edited on 5 January 2024, at 04:46